| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
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| Symposium
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2010 Functional and Structural Nanomaterials: Fabrication, Properties, Applications and Implications
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| Presentation Title |
Effect of Milling Parameters on the Structural Stability of Isothermally Heat treated Nanostrucutred Al-2.7at. %Ni Mechanically Alloyed Eutectic Powders |
| Author(s) |
Hanadi A. G. Salem, Mohy Eldin Raged |
| On-Site Speaker (Planned) |
Hanadi A. G. Salem |
| Abstract Scope |
In the current research optimum milling parameters and energy domains for the synthesis of Nanocrystalline Al-2.7 at.%Ni eutectic alloy was determined. Effect of milling parameters on the eutectic platelets morphology of Al3Ni was investigated. Structural stability before and after isothermal heating at temperatures higher than the recrystallization temperature was investigated using a differential scanning calorimeter. TEM and SEM were employed for the characterization of the structural evolution. The average stored energy increased with increasing the milling time, ball-to-powder ratio (BPR) and rotation speed (RPM). The average stored energy recorded for the powders milled at 200RPM for 40 hrs was 16.571 and 42.39j/g for the 5:1 and 10:1 BPR, respectively. The variation in dislocation densities was calculated for the mechanically alloyed powders before and after isothermal heating.
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| Proceedings Inclusion? |
Undecided |